# HG changeset patch # User jcb-mpl # Date 1652357494 0 # Node ID cfcdd499c781f9ffb877253c8dd583823964b1d0 # Parent 679024760b59669cc595cb5ab6e4ffd5b5234a23 Uploaded diff -r 679024760b59 -r cfcdd499c781 eics_check_references.xml --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/eics_check_references.xml Thu May 12 12:11:34 2022 +0000 @@ -0,0 +1,154 @@ + + + for 5 determined thresholds for m/z + + + scilab + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +**Author** Jean-Claude Boulet (INRA). + + +--------------------------------------------------- + +======================================================================= +CHECK REFERENCE MZ VALUES AMONG THE EICS-MEAN YIELDED BY THE PROCESSING +======================================================================= + +----------- +Description +----------- + +A matrix of EICs has been yielded by the function: MS-centroid -> EICs-individual or by the function: several EICs-shared -> one EICs-mean. + +The m/z values of these EICs are compared to reference m/z values for 5 pre-determined threshold values for m/z: 0.0005 / 0.0010 / 0.0030 / 0.0050 / 0.0100. + +This function is focused on the m/z values, it does not take into account the retention times. + + + +------ +Inputs +------ + +**reference m/z values** + +A tabular file, to the div format (first columns and rows = labels): + +- the first column corresponds to names of chemical compounds; + +- the second column contains the exact (reference) m/z values. + + +**EICs-mean or individual** + +A tabular matrix of (RT x m/z); lines are retention times and columns are EICs. + + +---------- +Parameters +---------- + +**correction of the electron mass** + +A correction can be applied to the reference m/z values. + +- 0: no correction; + +- 1: correction = subtraction of 0.00055 in the positive mode. + + + +------ +Output +------ + +**summary** + +The main results + + +**details** + +A .mat file + + +**extracted EICs** + +An EIC is associated to a reference m/z value if the absolute difference of (EIC minus reference) is under a threshold. + +Five threshold values have been pre-determined: 0.0005 / 0.0010 / 0.0030 / 0.0050 / 0.0100 + +This output contains a list of 5 data, each containing the EICs identified as reference m/z values according to a threshold. + + + + + + + + + +